abstemiousness
noun
the traditional belief in the virtues of abstemiousness:
temperance, abstinence, austerity, moderation, plain/simple living, self-discipline, self-denial, renunciation, restraint, self-restraint, self-deprivation, sobriety, asceticism, puritanism, severity, self-abnegation, continence.
▷antonyms self-indulgence, intemperance.